Transcript File
Unit 3 Lesson 1 Chain of Infection Ms. Sarina Promthong Unit 3 Lesson Outline Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Agenda: - Introduction to infectious disease - Chain of Infection Agenda: - Virus vs. Bacteria - Pathogen Card making Agenda: - Catching the fever trading card game! - Common Viral & Bacterial Infections and Prevention Agenda: - Clinical epidemiology lab - Role play: HCW (doctor) & patient Agenda: - Host defense - Introduction to the final project - Emerging, Reemerging Diseases - PSA making - HW Chain of infection - HW Print out 30xpathogen card 10xcharacter card 30xantibiotic card 8X vaccination card Cause of Communicable Diseases Communicable diseases, also know as infectious diseases are caused by organisms or viruses that enter and multiply within the human body. Microorganisms are organisms that can be seen only through a microscope. Microorganisms and viruses that cause disease are called pathogens. Pathogens can cause an infectious disease when they enter your body and multiply. Types of Pathogen Bacteria Virus Protozoans Fungi Chain of Infection Class Discussion 1. Infectious agents are microorganisms (or microbes) with the ability to cause infection. (e.g. Bacteria, Virus, etc.) 6. The individuals who got in infected • Low immune • Pathogen multiply in large number 5. An opening or ways allowing the pathogen to enter the host. 2. The 'reservoir' is where microbes live and where pathogens can survive, thrive and reproduce. 3. A place of exit providing a way for a pathogen to leave the reservoir. 4. The way in which the pathogen moves or is carried from one place to another. Breaking the Chain of Infection 6. Susceptible host • treatment of primary disease • recognising high risk clients. 5. Portal of entry • hand hygiene • wound care • catheter care • aseptic technique 1. Infectious agent • preventative treatment – for those who may be exposed • rapid identification • prompt treatment – for those infected • good health and hygiene. 2. Reservoir • good health and hygiene • environmental sanitation • disinfection/sterilisation • hand hygiene. 3. Portal of exit • hand hygiene 4. Mode of transmission • control of excretions and secretions hand hygiene, proper food handling, isolation procedures, • proper attire airflow control, or disinfection/sterilisation • appropriate disposal of trash and waste. Unit 3 Lesson 2 BACTERIA vs. VIRUS Ms. Sarina Promthong List as many details as possible about virus or bacteria from the pictures! 1. 2. 3. 4. Figure 2 Figure 1 Virus or bacteria? How do they reproduce? Type of genetic material? How big are they? (comparison to familiar object) Virus VS. Bacteria VIRUS BACTERIA • Non-cellular structure, composed of… Nucleic acids (genetic material; either DNA or RNA) Capsid • Living, microscopic unicellular prokaryotic • Lack of membrane-bound nucleus and membrane-bound organelles. • Nonliving (fail to meet criteria of life) Do not metabolize Do not reproduce Do not have properties of cell • Grouped according to properties as Size Nucleic acid Capsid and protein subunits Host Species Immunological characteristics • Five typical shapes Rod-shaped (bacillus) Round (coccus) Spiral (spirillum) Coccobacillus Vibrio Virus VS. Bacteria (1. Structure and Size) Comparing the Sizes Virus VS. Bacteria (2. Shape) (3. Reproduction) Viral reproduction (3. Reproduction) Bacteria reproduction Summary on VIRUS VS. BACTERIA Select a bacterial/viral pathogen to research on (follow the instructions on the class site)